This is a multi-barrel heavy machine gun on an anti-aircraft mount.

图中为设置在高射机枪架的多管重机枪。

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Heavy weapons, including anti-aircraft guns, were used during Monday's clashes which lasted about one hour, sources told CNN.

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But the fall of Gadhafi opened up a black market arms bazaar across North Africa, and western intelligence agencies believe AQIM may have acquired anti-aircraft missiles along with other heavy weapons, as well as plenty of vehicles, essential in a region of few (and dilapidated) roads.

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